• Title/Summary/Keyword: Side Face

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Retrofitting by adhesive bonding steel plates to the sides of R.C. beams. Part 2: Debonding of plates due to shear and design rules

  • Oehlers, Deric. J.;Nguyen, Ninh T.;Bradford, Mark A.
    • Structural Engineering and Mechanics
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    • v.9 no.5
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    • pp.505-518
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    • 2000
  • A major cause of premature debonding of tension face plates is shear peeling (Jones et al. 1988, Swamy et al. 1989, Ziraba et al. 1994, Zhang et al. 1995), that is debonding at the plate ends that is associated with the formation of shear diagonal cracks that are caused by the action of vertical shear forces. It is shown in this paper how side plated beams are less prone to shear peeling than tension face plated beams, as the side plate automatically increases the resistance of the reinforced concrete beam to shear peeling. Tests are used to determine the increase in the shear peeling resistance that the side plates provide, and also the effect of vertical shear forces on the pure flexural peeling strength that was determined in the companion paper. Design rules are then developed to prevent premature debonding of the plate ends due to peeling and they are applied to the strengthening and stiffening of continuous reinforced concrete beams. It is shown how these design rules for side plated beams can be adapted to allow for propped and unpropped construction and the time effects of creep and shrinkage, and how side plates can be used in conjunction with tension face plates.

A Human Face Recognition System : Incorporation of Complementary Utilization of Front and Profile Human Images (정면과 측면영상을 취합한 얼굴인식 시스템의 구현)

  • Choi, Dong-Sun;Lee, Ju-Shin
    • The Journal of the Acoustical Society of Korea
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    • v.15 no.6
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    • pp.73-80
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    • 1996
  • Success of a face recognition system depends on which parameters are used. Generally the parameters are affected by environment of facial images such as illumination. To reduce the influence of the evcironment, since side images are insensitive to variance of brightness, it might be an appropriate approach to make the defect of front face images complete with the features extracted from side images. This paper proposes a method which collects and completes the information of front and side images. It is intended to prove the usefulness of the method that it is compared with other methods.

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Analogical Face Generation based on Feature Points

  • Yoon, Andy Kyung-yong;Park, Ki-cheul;Oh, Duck-kyo;Cho, Hye-young;Jang, Jung-hyuk
    • Journal of Multimedia Information System
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    • v.6 no.1
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    • pp.15-22
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    • 2019
  • There are many ways to perform face recognition. The first step of face recognition is the face detection step. If the face is not found in the first step, the face recognition fails. Face detection research has many difficulties because it can be varied according to face size change, left and right rotation and up and down rotation, side face and front face, facial expression, and light condition. In this study, facial features are extracted and the extracted features are geometrically reconstructed in order to improve face recognition rate in extracted face region. Also, it is aimed to adjust face angle using reconstructed facial feature vector, and to improve recognition rate for each face angle. In the recognition attempt using the result after the geometric reconstruction, both the up and down and the left and right facial angles have improved recognition performance.

Face Recognition under Varying Pose using Local Area obtained by Side-view Pose Normalization (측면 포즈정규화를 통한 부분 영역을 이용한 포즈 변화에 강인한 얼굴 인식)

  • Ahn, Byeong-Doo;Ko, Han-Seok
    • Journal of the Institute of Electronics Engineers of Korea SP
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    • v.42 no.4 s.304
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    • pp.59-68
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    • 2005
  • This paper proposes a face recognition under varying poses using local area obtained by side-view pose normalization. General normalization methods for face recognition under varying pose have a problem with the information about invisible area of face. Generally this problem is solved by compensation, but there are many cases where the image is distorted or features lost due to compensation .To solve this problem we normalize the face pose in side-view to reduce distortion that happens mainly in areas that have large depth variation. We only use undistorted area, removing the area that has been distorted by normalization. We consider two cases of yaw pose variation and pitch pose variation, and by experiments, we confirm the improvement of recognition performance.

facial Expression Animation Using 3D Face Modelling of Anatomy Base (해부학 기반의 3차원 얼굴 모델링을 이용한 얼굴 표정 애니메이션)

  • 김형균;오무송
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.7 no.2
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    • pp.328-333
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    • 2003
  • This paper did to do with 18 muscle pairs that do fetters in anatomy that influence in facial expression change and mix motion of muscle for face facial animation. After set and change mash and make standard model in individual's image, did mapping to mash using individual facial front side and side image to raise truth stuff. Muscle model who become motive power that can do animation used facial expression creation correcting Waters' muscle model. Created deformed face that texture is dressed using these method. Also, 6 facial expression that Ekman proposes did animation.

Effects of Dimension of Part and Structure of Supports on the Shape Error in Stereolithography Process (SL 광조형 공정에서 제작물 치수와 지지대 구조가 형상오차에 미치는 영향)

  • Kim, Gi-Dae
    • Transactions of the Korean Society of Machine Tool Engineers
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    • v.15 no.3
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    • pp.32-38
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    • 2006
  • During stereolithography processes, the shape errors such as curl distortion and distortion of side face are generated due to the shrinkage of liquid resins. In this study, the effects of dimension of part and structure of supports on the shape error are examined. Cubic specimens which have different thicknesses are manufactured and their deformations are measured with CMM. Thicker part generates smaller curl distortion of top face and larger of bottom face. Also thicker part generates larger distortion of side face until part thickness increases to about 20mm. Larger stiffness of supports which is obtained by shorter spacing of the supports and line type contact instead of point type contact generates smaller shape error of the part.

Characteristics of Distance, Angle and Ratio among the Face Point on Photo in Sasang Constitutional Medicine (사상체질별 안면의 거리 각도 비율 특성)

  • Jang, Eun-Su;Kim, Yun-Jeong;Kim, Seong-Hun;Joo, Jong-Cheon
    • Journal of Sasang Constitutional Medicine
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    • v.22 no.2
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    • pp.37-47
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    • 2010
  • 1. Objectives: We aimed to derive constitutional facial characteristics with front and side picture of the people in this study 2. Methods: Through November 2007 to July 2009, we obtained front and side face photograph data of 715 male/female constitution confirmed subjects within the age range of 10-80 from 19 oriental medical facilities in the country. According to sex, we divided the subjects into two groups, real constitution group and non-constitution group. We analyzed significant variables of distance, angle and ratio of facial point through unpaired T-test. 3. Results: There are different significant variables according to Sasang Constitution and even though they are much different between sex, the interpretation of the meaning of those variables are similar with the written characteristics of ancient Writing. The face size of the Taeeumin is bigger than that of the non-Taeeumin, and especially they have long length from mouth to mandible angle. Soeumin have small jaw area, long philtrum and narrow facial feature like egg. Soyangin has developed forehead and glabella, short jaw, long eye side. Taeyangin has developed forehead, weak nose especially side end of nose, long eye side. 4. Conclusions: Sasang Constitutional facial characteristics are different between man and woman but there are much similarity with the facts as known on the interpretation of significant variables characteristics.

Pullout Test of Headed Reinforcing Bar in RC or SFRC Members with Side-Face Blowout Failure

  • Lee, Chang-Yong;Kim, Seung-Hun;Lee, Yong-Taeg
    • Architectural research
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    • v.22 no.1
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    • pp.33-39
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    • 2020
  • In this study, side-face blowout failure strength of high strength headed reinforcing bar, which is vertically anchoring between RC or SFRC members, is evaluated throughout pullout test. The major test parameters are content ratio of high strength steel fibers, strength of rebar, length of anchorage, presence of shear reinforcement, and the side concrete cover thickness planned to be 1.3 times of the rebar. In pullout test, tensile force was applied to the headed reinforcing bar with the hinged supports positioned 1.5 and 0.7 times the anchorage length on both sides of the headed reinforcing bar. As a result, the cone-shaped crack occurred where the headed reinforcing bar embedded and finally side-face blowout failure caused by bearing pressure of the headed reinforcing bar. The tensile strength of specimens increased by 13.0 ~26.2% with shear reinforcement. The pullout strength of the specimens increased by 3.6 ~15.4% according to steel fiber reinforcement. Increasing the anchoring length and shear reinforcement were evaluated to reduce the stress bearing ration of the total stress.

Side-View Fan Detection Using Both the Location of Nose and Chin and the Color of Image (코와 턱의 위치 및 색상을 이용한 측면 얼굴 검출)

  • 송영준;장언동;박원배;서형석
    • The Journal of the Korea Contents Association
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    • v.3 no.4
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    • pp.17-22
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    • 2003
  • In this paper, we propose the new side-view face detection method in color images which contain faces over one. It uses color and the geometrical distance between nose and chin. We convert RGB to YCbCr color space. We extract candidate regions of face using skin color information from image. And then, the extracted regions are processed by morphological filter, and the processed regions are labeled. Also, we correct the gradient of inclined face image using projected character of nose. And we detect the inclined side-view faces that have right and left 45 tips by within via ordinate. And we get 92% detection rate in 100 test images.

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Non-linear analysis of side-plated RC beams considering longitudinal and transversal interlayer slips

  • Kolsek, Jerneja;Hozjan, Tomaz;Kroflic, Ales;Saje, Miran;Planinc, Igor
    • Steel and Composite Structures
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    • v.16 no.6
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    • pp.559-576
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    • 2014
  • A new mathematical model and its finite element formulation for the non-linear stress-strain analysis of a planar beam strengthened with plates bolted or adhesively bonded to its lateral sides is presented. The connection between the layers is considered to be flexible in both the longitudinal and the transversal direction. The following assumptions are also adopted in the model: for each layer (i.e., the beam and the side plates) the geometrically linear and materially non-linear Bernoulli's beam theory is assumed, all of the layers are made of different homogeneous non-linear materials, the debonding of the beam from the side-plates due to, for example, a local buckling of the side plate, is prevented. The suitability of the theory is verified by the comparison of the present numerical results with experimental and numerical results from literature. The mechanical response arising from the theoretical model and its numerical formulation has been found realistic and the numerical model has been proven to be reliable and computationally effective. Finally, the present formulation is employed in the analysis of the effects of two different realizations of strengthening of a characteristic simply supported flexural beam (plates on the sides of the beam versus the tension-face plates). The analysis reveals that side plates efficiently enhance the bearing capacity of the flexural beam and can, in some cases, outperform the tensile-face plates in a lower loss of ductility, especially, if the connection between the beam and the side plates is sufficiently stiff.